Vulcanizer.



P. D. THROPP.

VULCANIZER.

vAPPLICATION FILED 1511.24. 1914.

1,152,993. A Pandsept 7, 1915.

mun',

IIIIII FATE @EFQE TER-GFP, TRENTN, NEV JERSEY, ASSIGNOR T EI-IE IDE LASKI AND 'essere cane-tiran Geneesheren :usw messy.

VIOVEN TIR CGMPANY, OF TRENTON, JERSEY, A

vuncamane. f e

7 1o all 'whom t may concern:

Be it known that I, PETER D. Tnaorr, ,a citizen of the United States, and resident of lllrenton, in the county of Mercer and State of New Jersey, have invented a new and useful Improvement in `Vulcanizers, of which the following is a specification.

This invention relates to an improvement in vulcanizers and particularly in vulcanizers adapted for the curing of annular articles, such as vehicle tires; with the object in View of providing apparatus of this charac: ter which has means. for producing a beneiicial circulation of the heating medium.

Another object is to provide c ertain improvements in the form, construction and is represented in izer,

arrangement of the several parts whereby.

the above-mentioned objects may be ell`ectively carried out. y

A practical embodiment of my invention the accompanying drawings, in which- Figure 1 represents a vertical central section through the vulcanizer, Fig. 2 represents a section taken in theplane of the line A-A of Fig. 1, looking in the direction of the arrows, partly broken away, Fig. 3 represents a detail vertical section of a modied form of the upper part of the vulcanand F ig. 4 represents a section taken in the plane of the line B-B of Fig. 3, looking in the direction of the arrows.

The vulcanizer to which this invention is shown as being applied is of the so-called vertical type, and includes the combination of a press and vulcanizer, for the curing of the outer casings of pneumatic tires. The general form of this type of vulcanizer is well known and includes a base l upon which is mounted a lower head 2; which lower head is connected to and spaced from an upper head 3 by means of a series of through-bolts 4, in the present case three of such bolts being shown. A hydraulic cylin# der 5 is centrally mounted in the base 1 and bottom 2, and therein is fitted the well known ram 6 which is adapted to support and compress a stack of tires 7, the tires being customarily held in their molds during this operation. The apparatus also includes a at Specification of Letters Eatent.

Application filed February 24, 1914.

Patented Sept'. t', 1915. Serial No. 820,606'.

thereof which is equipped with bolts 13 for V securing the chamber head 3. A packing vided between the 3 to prevent the medium.

Turning now of my invention, inlet 15, shown as present instance,

8 firmly to the upper gland 14 may be prochamber 8 and the head escape of the heating to the particular' features the upper head 3 has an centrally disposed in the for the induction of some heating medium, such as steam, into the chamber 8. The under face of the upper head 3 is provided with a series of grooves 16, which are arranged parallel to each other and extend almost completely across the under face of the said head. A' baffle plate 17 is secured to the said face of the head 3 by 'means of bolts 18; and the said baille plate is also provided, on both faces, withgrooves 19, 20, which correspond with the grooves 16 in the head 3. The said baille plate 17'a1so has circular depressions 21, 22,

centrally disposed on both sides thereof, and communicating with some of the grooves 16, 19 and 20.

It will be seen that the baiiie plate 17 is less in size than the circle described by a line passing through the extremities of the grooves 16, and consequently the ends of the said grooves 16 project beyond the edges of the said plate.

The ram 6 has a support 23 on the upper end thereof and within the chamber 8, which support 23 is adapted to hold the stack of tires 7, as clearly shown in Fig. 1. ThisA support 23 has a series of holes 24, 25, therethrough, which holes are located so as to lie within the tires 7.

The chamber 8 may be provided with a' suitable blow-olie 26.

Referring now to the modified form shown in Figs. 3 and 4, it will be noted that it is exactly the same as the preferred form already described, except that the under impinges against ithe' chamber 8 against the may be resorted face of the upper head 3 is not provided with any grooves 16, and the grooves 19, 20 are staggered. v i

In operation, assuming the chamber 3 and support 23 to be in their lowered position, the tires and their molds are stacked on the support 23, as clearly shown-in Fig. 1, and

on the upper head 3 by actuating the ram 5. The ram 11 is then put inoperation,

head 3, Where it is locked-by the bolts 13. The articles are now ready to be vulcanized and the .heating medium, such as steam, is introduced through the inlet 15.l The incoming steam the circular depression 21 in the plate 17 and is forced to travel therefrom through the grooves 16, 19, to the outer portion of the head 3 and hence to the outer portion of the chamber 8. Upon reaching the said outerl portion, the steam passes down around the stack of tires 7 engaging,r`

the outer portions thereof. When it reaches the bottom of the chamber 8, it is then permitted to pass up'through the holes 24, 25, in the support 23, vand thus contact with the inner portion of lthe said stack of tires. Upon again reaching the top of the vulcanizer, it will, a second time, pass outwardly by Way of the depression 212 and grooves 20, thus a second time coming in contact with the outer face of the tire, It will be seen that as long as the steam "is inducted i to the vulcanizer, it will continue this cyc e, thereby following a free vand uniform circulation and giving a Auniform vulcanization or cure to the tires. The grooves 16 which are not incommunication with the inlet 15 serve as additional channels of circulation during the' vulcanizing period. At the end of the vulcaniiing period,'the steam may be let out through the blow-oil 26, the support 23 and cylinder 8 depressed, and the tires removed.

It is to be understood that various changes to in the form, construction and arrangement of the several parts -Without departing from the spirit and scope ot my invention and hence I do not intend to be limited to specific details except as they are set forth in the claims.

l. Avulcanizing apparatus comprising a chamber, a head therefor/an inlet for a heating medium in said head, and grooves in said head extending from the inlet to the Iouter portion thereof.

-' 2. A vulcamzing apparatus comprising a chamber, ahead thenefor, 'a plate secured to the un er, face of said head, and grooves in said plate extending from one side to the other thereof.'y

3. A vulcanizing apparatus comprising a chamber, a head' therefor, an inlet for a heating medium in said head, a plate secured.

closing to the under face of said head, and grooves in said `plate extending' from said inlet to the outer edges ol the plate.

4. A vulcanizing apparatus comprising a chamber, a head therefor, a plate secured to the under face of said head, and grooves in both sides of said plate. the stack 1s compressed against the plat-e 1'( A vulcanizing apparatus comprising a chamber, a head therefor.I an inlet 'for a ,heating medium in said head, a plate secured heating' medium in said head, a plate secured,

to the under face of the head, said plate havl ingr depressions on both sides thereof suhstantially concentric With the inlet, and grooves ext-ending'from said depressionsv to the outer edges of the plate.

7 A vulcanizing apparatus comprising a chamber, a head therefor, an inlet for a heating medium in said head, a `support Within the chamber 'for an annular article to be vulcanized, grooves in the inner face of the head for conducting the medium Jroin theinl-et to the outside of the article, and perforations in the support for conducting the medium from the outside of the article to the inside thereof.

8. Avvulcanizing apparatus comprising a chamber, a head therefor, an inlet for a heating medium in said head, a support Within the chamber for a. stack of annular articles to be vulcanized, grooves in the inner face of the head tfor conducting the medium from lili* the inlet to the outside of the stack of articles, and pert'orations in the support for conducting the medi um' from the outside of the stack to the inside thereof. I

9. A vulcanizing apparatus comprising; a chamber, a head therefor, an inlet for a heating medium in the head, a support Within the chamber for an annular article to be 10. A vulcanizimer apparatus comprisingl a i chamber, head therefor, an inlet for a heatingr me' ium in the head, a support Within the chamber for a stack of ,annular articles to be vulcan'zed, a plate secured to the un- J der face of he said head, grooves between the said plate and the said head for conducting; the medium from the inlet to the outside of the stack of articles, the ,said support having perforations for conduoting the as my invention, I have signed my name in medium from the outside of the stack to the presence of two Witnesses, this 19th day of inside thereof,` and grooves on the under February 1914:.y

- side of the said plate for conducting the- PETER D. THROPR 5 medium from insidethe-articles vto the ont- Witnesses: Y [side-thereof. CLIFFORD W.ALEE,

In testimony, that I'- claim the foregoing HARRY PERBINE MEssLo'nQ 

